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Directivity majorization for short range wireless mobile communication systems

A mobile communication system and short-distance wireless technology, applied in the field of signal transmission, can solve the problems of unmaintainable and high tracking speed

Inactive Publication Date: 2011-11-23
SONY DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For short distances between communicating terminals, the required tracking speeds are often too high to be maintained by conventional beam tracking systems.

Method used

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  • Directivity majorization for short range wireless mobile communication systems
  • Directivity majorization for short range wireless mobile communication systems
  • Directivity majorization for short range wireless mobile communication systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The basic concept of a short-range wireless mobile communication system with beam tracking for low-loss, low-signal-interference communication is as figure 1 shown. A first terminal 1 , formed for example by an access point of a wired network, transmits signals to and receives signals from a mobile terminal 2 by means of a signal wave converter 1 a having directional properties. Mobile terminal 2 similarly includes signal wave converter 2a, but in such as figure 1 In the example shown is a signal wave converter 2a with omnidirectional properties 2b. When the mobile terminal 2 moves from the first position I to the second position II, the directional characteristic 1b of the signal wave converter 1a of the first terminal I is realigned to the directional feature 1b II , its main lobe is now tuned to the direction of the mobile terminal in position II. In other words, when the mobile terminal moves from position I to position II, the radiation angle of the signal wave...

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Abstract

The present invention provides a short range wireless mobile communication system with a first terminal (1) and a mobile terminal (2) that are each adapted for transmitting and receiving an information carrying signal wave, whereby at least the first terminal (1) or the mobile terminal (2) comprise a directional signal wave converter (1a) for transmitting and / or receiving the information carrying signal wave with a directional characteristic (1b , 1b<II>) and a control means (4, 5, 20) for controlling the directional characteristic (1b, 1b<II>) according to a position of the mobile terminal (2) relative to the first terminal.

Description

technical field [0001] The present invention relates to a signal transmission in a short-distance wireless communication system in which at least one communication terminal is randomly moved. Background technique [0002] A short-range wireless mobile communication system generally forms an integral part of a short-range wireless network, wherein access point terminals are provided to enable one or more mobile terminals to connect wirelessly to the network. The range of corresponding systems is usually limited to a few meters, like for example 2-10 meters. Mobile short-range wireless communication is also used in wireless ad-hoc networks, where a wireless connection can be established directly between two nodes, like for example personal digital assistants and printing or display devices. [0003] As soon as transceivers with omnidirectional, ie, angle-independent radiation characteristics are used in short-range wireless mobile communication systems, the quality of the est...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/28H01Q25/00H04L12/28H01Q1/24
CPCH04W84/18H04B7/086H04B7/0619H04W16/28
Inventor V·尼科拉耶维克M·乌诺
Owner SONY DEUT GMBH